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Iwata, Takashi
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Associate Professor at the Faculty of Environment and Information Studies, Keio University. PhD. Born in Yamato City, Kanagawa, Japan. Specialises in animal ecology. His research focuses on elucidating the behavioural ecology of wild animals using a method known as biologging, which involves attaching small data loggers to animals to record their movements and surrounding environmental conditions. He has conducted field research in various regions of the world, including the Antarctic, sub-Antarctic, Norway, Iceland, Canada, Thailand, and Mexico, studying a wide range of marine animals such as whales, seals, fur seals, penguins, albatrosses, and billfish. Since 2021, he has also expanded his research activities within Japan, working on diverse species including whales and dolphins, sea turtles, sharks, freshwater turtles, and salamanders. In addition to biologging, his research integrates multiple approaches, including underwater acoustic monitoring and dietary analyses, to achieve a comprehensive understanding of the behaviour and ecology of wild animals. While grounded in fundamental research on animal ecology, his work also aims to contribute to broader efforts to promote coexistence between humans and wildlife and to improve understanding of marine environments.
Studying wild animals offers a rare opportunity to discover aspects of the natural world that remain largely unknown. Observing animals in their natural environments often reveals behaviours and adaptations that challenge our expectations and deepen our understanding of life in the wild. Research in our group combines fieldwork, new observation technologies, and data analysis to uncover the hidden lives of animals. One of the most exciting moments in research is when new data reveal patterns or behaviours that no one has documented before. If you are curious about nature and motivated by the excitement of discovery, I welcome you to explore these questions with us.
Tokyo University of Marine Science and Technology, Oceanographic Observation Center, Project Researcher
University of Tokyo, Atmosphere and Ocean Research Institute, Project Researcher
University of Tokyo, Atmosphere and Ocean Research Institute, Postdoctoral Researcher for Ocean Science
University of St Andrews, Sea Mammal Research Unit, Postdoctral Fellowships (JSPS Research Abroad)
University of Tokyo, Atmosphere and Ocean Research Institute, Project Researcher
Nihon University, College of Bioresource Sciences, Department of Marine Science and Resources
University, Graduated
The Graduate University for Advanced Studies, School of Multidisciplinary Sciences, Department of Polar Science
Graduate School, Completed, Other
博士（理学）, The Graduate University for Advanced Studies, Coursework, 2012.03
亜南極域サウスジョージアにおけるナンキョクオットセイの採餌戦略に関する研究
Life Science / Animal physiological chemistry, physiology and behavioral biology (Animal Ecology, Biologging, Marine Mammals)
A possible example of the coexistence of dolphins and marine economic activity in Osaka Bay, Japan
Iwata, T., Matsumoto, T., Ogawa, M. I., Akamatsu, T., Araki, T., & Kimura, S. S.
Aquatic Mammals 52 ( 1 ) 1 - 7 2026.01
Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted
Glarou, M., Christiansen, F., Iwata, T., Basran, C. J., Ruppert, S. N. S., Sotiropoulou, D., Iversen, M. R., Akamatsu, T., Schnitzler, J. G., Siebert, U., Rasmussen, M. H.
Journal of Comparative Physiology B (Springer Nature) 195 659 - 675 2025.12
Research paper (scientific journal), Joint Work, Accepted
Iwata T., Yonezaki S., Kohyama K. and Mitani Y.
Aquatic Mammals 39 378 - 384 2025.12
Research paper (scientific journal), Joint Work, Lead author, Accepted
Prey targeted by lactating Weddell seals (Leptonychotes weddellii) in Erebus Bay, Antarctica
Foster-Dyer, R. T., Goetz, K. T., Iwata, T., Holser, R. R., Michael, S. A., Pritchard, C., Childerhouse, S., Costa., P. D., Ainley, G. D., Pinkerton, H. P., LaRue, M. A.
Polar Biology (Springer Nature) 47 ( 11 ) 1187 - 1202 2025.12
Research paper (scientific journal), Joint Work, Accepted
Iwata, T., Akamatsu, T.
Water Biology and Security (Elsevier) 4 ( 4 ) 100383 2025.10
Research paper (scientific journal), Joint Work, Lead author, Corresponding author, Accepted
